Jimmy Cooper

Balanced rudders.I am told that 25/75 % is an optimum (using the pivot point as the centre). Checked my Sirocco as didn't like the 'over centre' feel. Felt like it was dropping into turns and you'd have to pull it straight.The two rudders when checked were 29/71 % on measurements.I made up sone SS plates to alter the balance of the rudders by moving the relative pivot point to my give basically the same feel as my Marlin III, 21/79. Sooooooooo much better.Now feels good with a more self centering action without be heavy.Nice when a plan comes together...........

Gary Firth (Gazza)

Bugger. 2 new pulse pumps original and a new mikuni cast outboard in the 16hp Briggs and it still wonít get fuel to the carb on full chat. (No blocked pipes and breather working). Gravity feed it and no problem. Didnít want to go down the electric pump but I fear I have no option. Unless Iím missing something.

John Robertson

Lift height is next to nothing so that can't be the problem. My guess would be the vacuum pipe to the pump - they need to be short and very stiff wall or the pipe "pulses" instead of the pump diaphragm.

rossfloyd

I had hells own trouble after a rebuild ...until I found that I had connected the pipes the wrong way - very red face.

Previously I actually changed Britannia's entire lift engine because of this problem - I couldn't find the trouble until long afterwards - a tiny split on the side of the pulse tube - after a few minutes at full power it couldn't quite give enough fuel. Caused a few very nasty moments off St Thomas' Head.

I tried an elec pump and went back to pulse. My back ups are the engine primers - KISS comes to mind !

Logged

Gary Firth (Gazza)

Sorted the problem. This is a brand new engine. I put the original pump back on the craft and still didnít work. So I changed the original Briggs fuel filter for a new filter (bought ten off eBay ages ago). Works a treat now. No issues and I now have a new unused facet pump for the box a bits.